(385186) 1994 AW1

Asteroids with Satellites Database--Johnston's Archive

(385186) 1994 AW1

compiled by Wm. Robert Johnston
last updated 20 September 2014

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: NEA, Amor (PHA)
orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.104781278 AU
orbital period P: 1.161241803 yr
(= 424.1435685 d)
eccentricity e: 0.075460167
perihelion distance q: 1.021414298 AU
aphelion distance Q: 1.188148259 AU
inclination i: 24.1001176°
argument of perihelion ω: 37.085728°
ascending node Ω: 290.3944040°
mean anomaly M: 331.423266°
perihelion passage T_P: 2014 Jun 25.66843
Epoch: 2014 May 23
data arc: 1994-2014 (656 obs.)
Earth MOID: 0.0190858 AU
Jupiter Tisserand invariant T_J: 5.549

orbital data, secondary:

binary dynamical type: A [P07f]
semimajor axis a_s: 2 km [*E]
separation/primary radius a_s/r_p: 4.6 [M03b]
separation/Hill radius a_s/r_H: 0.026 [*E]
orbital period P_s: 0.9304 ± 0.004 d [P06b]
eccentricity e_s: <0.05 [P02a]
normalized ang. mom. α_L: 1.38 [P07f]

other data, system (combined):

absolute mag. H: 17.5 [MPC]
slope parameter G: (0.15) [*A]
effective diameter d_E: 1.04 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
color index V-R: 0.42 ± 0.03 [P97a]
taxonomic type: Sa (SMASSII) [JPL]
mass m: ?
density ρ: (1.6 g/cm³) [*A]
Hill radius r_H: 77 km [*E]
other data, primary:

diameter d_p: 0.94 km [*D]
rotation period RP_p: 2.519 ± 0.000 h [P06b]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:

diameter d_s: 0.46 km [*D]
diameter ratio d_s/d_p: 0.49 ± 0.02 [P06b]
component mag. difference ΔM: 1.55 ± 0.09 [*D]
rotation period RP_s: ?

-- (385186) 1994 AW1 --discovery and notes:

Primary discovered 1994 Jan 11 from Palomar Observatory, California, USA by K. J. Lawrence and E. F. Helin. Linked to prediscovery observations from 1986. Permanent number assigned 2014 Feb 14.

Companion discovered 1994 Jan using lightcurve observations. Announced 1994.

--Links, more technical:

IAUC 6607.
1994 AW1
Cambridge-Conference Network 103/2000-11 October 2000: Tidal Disruption of Asteroids by Petr Pravec.

--Links, less technical:

--Links to ADS abstracts:

Tesi, L., Boattini, A., Tombelli, M., Forti, G., Hicks, M., Lawrence, K., McConnochie, T., & Williams, G. V. 1999, Minor Planet Electronic Circ., 1999-X21 (1999). 1994 AW1
Pravec, Petr, Wolf, Marek, & Sarounova, Lenka 1998, Icarus Occultation/Eclipse Events in Binary Asteroid 1991 VH
1997, European Southern Observatory Press Release Discovery of a Satellite around a Near-Earth Asteroid
Pravec, P., Wolf, M., & Sarounova, L. 1997, International Astronomical Union Circular 1991 VH
Pravec, P. & Hahn, G. 1997, Icarus Two-Period Lightcurve of 1994 AW_1: Indication of a Binary Asteroid?
Pravec, P., Wolf, M., Varady, M., & Bárta, P. 1995, Earth Moon and Planets CCD Photometry of 6 Near-Earth Asteroids
Boattini, A., Tombelli, M., Goretti, V., McNaught, R. H., Garradd, G. J., Asher, D. J., Steel, D. I., Meyer, E., Sicoli, P., Cavagna, M., Testa, A., Giuliani, V., Balam, D. D., Tatum, J. B., & Williams, G. V. 1994, Minor Planet Electronic Circ., 1994-B10 (1994). 1994 AW1
Urata, T., Pravec, P., & Williams, G. V. 1994, Minor Planet Electronic Circ., 1994-B02 (1994). 1994 AW1
Lawrence, K., Helin, E. F., Rogers, J. E., Marsden, B. G., Rose, P., & Williams, G. V. 1994, Minor Planet Electronic Circ., 1994-A06 (1994). 1994 AW1

© 2001-2014, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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